Online blind area straightening mechanism for producing forklift portal frame products

The invention relates to an on-line blind area straightening mechanism for producing forklift portal frame products, in particular to an on-line blind area straightening mechanism used when the forklift portal frame products are produced. The forklift gantry straightening device is mainly designed for solving the problem that when a forklift gantry product is straightened at present, a part located in a straightening blind area needs to be secondarily straightened through special equipment. The bearing box is fixed on the straightening machine, a driving shaft extends out of the bearing box, a hydraulic cylinder fixing seat is arranged on the bearing box, a rotary hydraulic cylinder is connected to the hydraulic cylinder fixing seat through a bolt, a cylinder rod connector of the rotary hydraulic cylinder is connected with the driving shaft, a blind area straightening roller is installed on the driving shaft exposed out of the bearing box, and threads are arranged on the driving shaft. A gland is mounted on t